Feyerherm, R., Amato, A., Geibel, C., Gygax, F. N., Hellmann, P., Heffner, R. H., et al. (1997). Competition between magnetism and superconductivity in CeCu2Si2. Physical Review B, 56(2), 699-710. doi:10.1103/PhysRevB.56.699.